<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html; charset=ISO-8859-1"
 http-equiv="content-type">
  <meta name="AUTHOR" content="PeaZip Free Archiver Utility">
  <meta name="DESCRIPTION"
 content="Learn more about PeaZip free file archiver utility, frontend for 7-Zip FreeArc PAQ PEA. What is, how to install on Windows, Linux, notes for users, developers.">
  <meta name="KEYWORDS"
 content="free archiver, file archiver, free file archiver, frontend, free, file, archiver, utility, archiver utility, 7-Zip, 7zip, 7z, FreeArc, PAQ, PEA, compress, convert, sfx, open, extract">
  <meta name="ROBOTS" content="all">
  <title>Learn more | What is PeaZip, free file archiver utility</title>
  <meta name="viewport" content="width=device-width">
  <link rel="stylesheet" type="text/css" href="peazip-software.css">
  <link rel="stylesheet" type="text/css" href="rar-files-cloud.css">
</head>
<body>
<div style="text-align: center;">
<table
 style="width: 100%; text-align: left; margin-left: auto; margin-right: auto;"
 border="0" cellpadding="0" cellspacing="0">
  <tbody>
    <tr align="center">
      <td
 style="vertical-align: top; background-color: rgb(72, 136, 248);">
      <table
 style="width: 100%; text-align: left; margin-left: auto; margin-right: auto;"
 border="0" cellpadding="0" cellspacing="0">
        <tbody>
          <tr align="center">
            <td
 style="vertical-align: top; background-color: rgb(248, 247, 246);">
            <table
 style="width: 100%; text-align: left; margin-left: auto; margin-right: auto;"
 border="0" cellpadding="0" cellspacing="0">
              <tbody>
                <tr align="center">
                  <td
 style="vertical-align: top; background-color: rgb(236, 235, 234);">
                  <table style="text-align: left;" border="0"
 cellpadding="0" cellspacing="0">
                    <tbody>
                      <tr>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                        <td style="vertical-align: top;"><br>
                        </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top;"> <img
 title="Learn more about PeaZip free file archiver utility, frontend for 7-Zip, FreeArc, PAQ, PEA"
 alt="what is peazip free file archiver utility" src="peazip_ico24.png"
 style="border: 0px solid ; width: 24px; height: 24px;"> </td>
                        <td style="vertical-align: middle;">&nbsp;
&nbsp; &nbsp;&nbsp; &nbsp; <br>
                        </td>
                        <td style="vertical-align: middle;"><a
 href="index.html">DOWNLOAD
PEAZIP FREE ARCHIVER</a> </td>
                        <td style="vertical-align: middle;">&nbsp;
&nbsp; &nbsp;&nbsp; &nbsp; <br>
                        </td>
                        <td style="vertical-align: middle;"><a
 href="peazip-help-faq.html">ONLINE SUPPORT</a> </td>
                        <td style="vertical-align: top;">&nbsp;
&nbsp; &nbsp;&nbsp; &nbsp; <br>
                        </td>
                        <td style="vertical-align: middle;"><a
 href="screenshots-peazip-1.html">SCREENSHOTS</a> </td>
                        <td style="vertical-align: top;">&nbsp;
&nbsp; &nbsp; &nbsp;&nbsp; <br>
                        </td>
                        <td style="vertical-align: middle;"><a
 href="donations.html">DONATE</a> </td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                        <td style="vertical-align: top;"><small><br>
                        </small></td>
                      </tr>
                      <tr>
                        <td style="vertical-align: top;"><img
 alt="how to install peazip free archiver" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="what is peazip file archiving utility" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="install software on windows" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"><br>
                        </td>
                        <td style="vertical-align: top;"><img
 alt="install software on Linux" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td
 style="vertical-align: top; background-color: rgb(51, 102, 255);"><img
 alt="how to run peazip free zip utility" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="how to run peazip free rar software" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="how to uninstall allpication on windows"
 src="peazip/compressor.png" style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="how to uninstall application on linux" src="peazip/compressor.png"
 style="width: 2px; height: 2px;"></td>
                        <td style="vertical-align: top;"><img
 alt="what is peazip portable file compression tool"
 src="peazip/compressor.png" style="width: 2px; height: 2px;"></td>
                      </tr>
                    </tbody>
                  </table>
                  </td>
                </tr>
              </tbody>
            </table>
            <br>
            <table style="width: 960px; text-align: left;" border="0"
 cellpadding="0" cellspacing="0">
              <tbody>
                <tr>
                  <td style="width: 96px; vertical-align: top;">
                  <div style="text-align: center;"> </div>
                  <h2 style="text-align: left;"><img
 title="What is PeaZip, how to install / uninstall on Windows and Linux, notes for users and developers"
 alt="install gui frontend for 7-Zip FreeArc PAQ on linux and windows"
 src="zip-files/extract-rar-files.png"
 style="border: 0px solid ; width: 64px; height: 64px;" align="top"></h2>
                  </td>
                  <td style="vertical-align: middle;">
                  <p><small><a name="what_is_peazip_free_archiver"></a>PeaZip
is a free cross-platform file archiver utility that provides an unified
portable GUI frontend for many Open Source technologies like 7-Zip,
FreeArc,
PAQ, UPX... free alternative to WinRar, WinZip </small><small>and
similar
proprietary software</small><small>.<br>
- Create 7Z, ARC, BZ2, GZ, *PAQ, PEA, QUAD/BALZ, TAR, UPX, WIM, XZ, ZIP
files<br>
- Open and extract ACE, ARJ, CAB, DMG, ISO, LHA,
RAR, UDF, ZIPX files and more,</small><small> over 200 archive types
supported</small><small><br>
Features of PeaZip includes: </small><small> </small><small>archives
opener and extractor, </small><small>batch creation and </small><small>extraction
                  </small><small>of multiple
archives at once, </small><small>convert files, </small><small>create
self-extracting archives, split and join files,
strong encryption with two factor authentication, encrypted password
manager, </small><small>secure deletion, </small><small>find
duplicate files, </small><small>calculate hash and checksum,
export job definition as script.</small></p>
                  </td>
                  <td
 style="text-align: right; width: 224px; vertical-align: middle;">
                  <div style="text-align: center;"> </div>
                  <h3><a href="index.html"><span
 style="text-decoration: underline;"><img
 alt="download free archiver utility"
 title="Download PeaZip free rar extraction utility"
 src="free-rar/extract-zip.png"
 style="border: 0px solid ; width: 200px; height: 48px;" align="middle"></span></a></h3>
                  </td>
                </tr>
              </tbody>
            </table>
            <br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; text-align: center; background-color: rgb(240, 239, 238);"><small><a
 href="peazip-help-faq.html">FAQ,
HOW TO</a></small></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; text-align: center; background-color: rgb(240, 239, 238);"><small><a
 href="peazip-help.html">ONLINE TUTORIAL</a></small></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; text-align: center; background-color: rgb(240, 239, 238);"><small><a
 href="peazip-more.html">REPORT ISSUES</a></small></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; text-align: center; background-color: rgb(204, 224, 255);"><small><a
 href="peazip-free-archiver.html">WHAT
IS PEAZIP</a><br>
                  </small></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center;"><a
 href="changelog.html"><small>CHANGELOG<br>
                  </small></a></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center;"><small><a
 href="peazip-compression-benchmark.html">FILE COMPRESSION BENCHMARKS</a></small></td>
                  <td style="vertical-align: top; text-align: center;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238); text-align: center;"><small><a
 href="peazip-reviews.html">REVIEWS</a></small></td>
                </tr>
              </tbody>
            </table>
            <br>
            </td>
          </tr>
        </tbody>
      </table>
      <div style="text-align: left;"> </div>
      <table
 style="width: 960px; text-align: left; font-weight: bold; color: rgb(253, 253, 253);"
 border="0" cellpadding="0" cellspacing="0">
        <tbody>
          <tr>
            <td colspan="1" rowspan="1" style="vertical-align: top;"> <br>
            <h1 style="text-align: center;"><big><big><big><a
 name="file_archiving_software"></a>Learn more, what is PeaZip free
file archiver utility<br>
            </big></big></big></h1>
            <br>
            </td>
          </tr>
        </tbody>
      </table>
      </td>
    </tr>
    <tr align="center">
      <td
 style="vertical-align: top; background-color: rgb(248, 247, 246);"><br>
      <table
 style="background-color: rgb(240, 240, 240); width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr align="left">
            <td
 style="background-color: rgb(255, 255, 255); vertical-align: top;">
            <div style="text-align: left; color: rgb(0, 0, 0);">
            <ul>
              <li><a href="peazip-free-archiver.html#archive_manager">WHAT
IS PEAZIP</a></li>
            </ul>
            <ul>
              <li><a href="peazip-free-archiver.html#free_file_archiver">HOW
TO INSTALL / UNINSTALL
PEAZIP FREE FILE ARCHIVER UTILITY</a><span
 style="text-decoration: underline;"><br>
                </span></li>
            </ul>
            <ul style="margin-left: 40px;">
              <li><a
 href="peazip-free-archiver.html#file_archiver_for_microsoft_windows">INSTALL
AND RUN PEAZIP ON WINDOWS</a></li>
              <li><a
 href="peazip-free-archiver.html#linux_file_archiver">INSTALL AND RUN
PEAZIP ON LINUX</a></li>
              <li><a
 href="peazip-free-archiver.html#apple_rar_expander_osx">OTHER SYSTEMS</a></li>
              <li><a
 href="peazip-free-archiver.html#portable_file_archiver">PORTABLE</a></li>
            </ul>
            <ul>
            </ul>
            <p> </p>
            <ul>
              <li><a
 href="peazip-free-archiver.html#file_compression_software">NOTES</a> </li>
            </ul>
            <ul style="margin-left: 40px;">
              <li><a href="peazip-free-archiver.html#how_to_use_peazip">USERS</a></li>
              <li><a
 href="peazip-free-archiver.html#software_translations">TRANSLATORS</a></li>
              <li><a
 href="peazip-free-archiver.html#software_development">DEVELOPERS</a></li>
              <li><a
 href="peazip-free-archiver.html#software_engineering">THIRD PARTY
TECHNOLOGIES</a></li>
              <li><a href="peazip-free-archiver.html#software_design">PROJECT'S
GOALS</a></li>
            </ul>
            <ul>
            </ul>
            <br>
            <br>
            <h2><big><big><big><a name="archive_manager"></a><a
 href="peazip-free-archiver.html#file_archiving_software">What is PeaZip</a></big></big><br>
            </big></h2>
            </div>
            <br>
            <div style="text-align: left;">PeaZip is a free <a
 target="_blank" href="http://en.wikipedia.org/wiki/File_archiver">archiver<img
 alt="file archiver" title="File archiving" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>
and <a target="_blank" href="http://en.wikipedia.org/wiki/File_manager">file
manager<img alt="file management tools" title="File manager"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> utility,
based on solid and proven
Open Source technology of <span style="font-weight: bold;">7-Zip</span>
and other great Open Source
tools (like FreeARC, PAQ, UPX...) for
supporting additional file formats and features, in order to provide an
all
purpose zip utility featuring a powerful unified GUI that, unlike most
of other classic file archivers like
i.e. WinZip and WinRar, is natively portable
and <a target="_blank"
 href="http://en.wikipedia.org/wiki/Cross-platform">cross-platform<img
 alt="multi platform software" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, being
available for computers or tablets running 32
bit and 64
bit Windows (9x, NT/2K/XP, Vista/7/8/10, ReactOS, Wine), Linux or BSD
x86 and x86-64 (desktop
neutral
application, supports Gnome, KDE and other desktop environments).<br>
            <br>
PeaZip is Free Software, under Open Source
license <a target="_blank" href="http://www.gnu.org/licenses/lgpl.html">LGPLv3<img
 title="GNU Lesser General Public License"
 alt="Lesser GPL license version 3" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a>, and it is
            <span style="font-weight: bold;">free
of charge for any use</span>
(personal and professional, business or governament), modification, and
distribution, without "expiration date" or "trial" limitations.<br>
            <br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="0" cellspacing="0">
              <tbody>
                <tr>
                  <td style="vertical-align: top; width: 448px;">
                  <table
 style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
 border="0" cellpadding="24" cellspacing="1">
                    <tbody>
                      <tr>
                        <td colspan="1" rowspan="1"
 style="vertical-align: top; background-color: rgb(250, 250, 250);"> <span
 style="font-weight: bold;">Full
(read/write) support<br>
                        <br>
                        </span><span style="font-weight: bold;">7z</span>,
FreeArc's
arc/wrc,
sfx (7z and arc), Brotli <span style="font-weight: bold;">br</span>,
bz2, gz, paq/lpaq/zpaq, pea,
quad/balz/bcm, rar (if Rar.exe is available on the system), split, <span
 style="font-weight: bold;">tar</span>,
upx, wim, <span style="font-weight: bold;">zip</span>, Zstandard <span
 style="font-weight: bold;">zst<br>
                        </span></td>
                      </tr>
                    </tbody>
                  </table>
                  <br>
                  <table
 style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
 border="0" cellpadding="24" cellspacing="1">
                    <tbody>
                      <tr>
                        <td colspan="1" rowspan="1"
 style="vertical-align: top; background-color: rgb(250, 250, 250);">
                        <h3><span style="font-weight: bold;">Supporyted
encryption standards</span></h3>
                        <div style="text-align: left;"><br>
                        <h4>7Z: 7-Zip AES256 encryption</h4>
                        <br>
ZIP: WinZip AES256 AE, and ZipCrypto for legacy
compatibility; can decrypt PKZip's
AES encryption<br>
                        <br>
RAR, if Rar.exe is available in the system<br>
                        <br>
                        <h4>ARC: FreeARC AES256, Blowfish,
Twofish256 and
Serpent256</h4>
                        <br>
                        <h4>PEA: AES256
EAX authenticated encryption </h4>
                        </div>
                        </td>
                      </tr>
                    </tbody>
                  </table>
                  </td>
                  <td style="vertical-align: top; width: 24px;"><br>
                  </td>
                  <td style="vertical-align: top; width: 448px;">
                  <table
 style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
 border="0" cellpadding="24" cellspacing="1">
                    <tbody>
                      <tr>
                        <td colspan="1" rowspan="1"
 style="vertical-align: top; background-color: rgb(250, 250, 250);">
                        <h4><span style="font-weight: bold;">Read
(browse,
extract,
test)</span></h4>
                        <h4><span style="font-weight: bold;"></span></h4>
                        <span style="font-weight: bold;"> <br>
                        </span><span style="font-weight: bold;"></span>7z,&nbsp;
Google
Android's <span style="font-weight: bold;">apk</span>,
Google's Brotli br, bz, bz2,
bzip2, tbz2, tbz, Facebook's Zstandard zst and tzst, gz, gzip, tgz,
tpz, tar, zip, <span style="font-weight: bold;">zipx</span>, z01,
smzip,
arj, <span style="font-weight: bold;">cab</span>,
chm, chi, chq, chw, hxs, hxi, hxr, hxq, hxw, lit, cpio, deb, lzh, lha, <span
 style="font-weight: bold;">rar </span>(and most recent rar 5
revision), r01, 00, rpm, z, taz, tz, <span style="font-weight: bold;">iso</span>,
Java (jar, ear,
war), pet, pup, pak, pk3, pk4, slp, [Content], xpi, wim, u3p,
lzma86, lzma, udf, xar, Apple's dmg, hfs, part1, split, swm, tpz, kmz,
xz, txz,
vhd, mslz, apm, mbr, fat, ntfs, exe, dll, sys, msi, msp, Open Office /
Libre Office (ods, ots, odm,
oth, oxt, odb, odf, odg, otg, odp, otp, odt, ott), gnm, Microsoft
Office (doc, dot, xls,
xlt, ppt, pps, pot, docx, dotx, xlsx, xltx), Flash (swf, flv), quad,
balz, bcm, zpaq,
paq8f, paq8jd, paq8l, paq8o, lpaq1, lpaq5, lpaq8, <span
 style="font-weight: bold;">ace</span> through separate unace plugin
(closed source) available on <a href="peazip-add-ons.html">PeaZip
add-ons</a> page, arc, wrc, 001,
pea, cbz, cbr, cba, cb7,
cbt (and more...)</td>
                      </tr>
                    </tbody>
                  </table>
                  <br>
                  <table
 style="background-color: rgb(240, 240, 240); width: 100%; text-align: left;"
 border="0" cellpadding="24" cellspacing="1">
                    <tbody>
                      <tr>
                        <td colspan="1" rowspan="1"
 style="vertical-align: top; background-color: rgb(250, 250, 250);"> <span
 style="font-weight: bold;">Repair</span><br>
                        <br>
FreeArc's arc/wrc<br>
RAR, if Rar.exe is available in the system<br>
                        </td>
                      </tr>
                    </tbody>
                  </table>
                  </td>
                </tr>
              </tbody>
            </table>
            <span style="font-weight: bold;"></span><span
 style="font-weight: bold;"></span><span style="font-weight: bold;"></span>
            <span style="font-weight: bold;"></span></div>
            <br>
PeaZip can also be used to try to open any arbitrary file extension
with <span style="font-weight: bold;">"Open as archive"</span> menu
entry, as many file formats are simply variants of archive formats
(especially of zip standard).<br>
Even more file structures (forensic file types, WavPack compressed
files, etc) can be parsed extending PeaZip capabilities via <span
 style="font-weight: bold;">standard 7-Zip
Codecs</span>, copying extra codecs to PeaZip's folder in res\7z\Codecs
path.<br>
In example a large family of codecs (compatible with PeaZip and 7-Zip)
is available <a href="https://www.tc4shell.com/en/7zip/">here<img
 title="7-Zip codecs" alt="7Z codecs" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> -
please note TC4Shell codecs are free but closed source, so they can be
freely downloaded and installed by end users but they cannot be
distributed within PeaZip packages.<br>
            <br>
PeaZip is localized over than 30 languages and is capable of handling
all most popular archive
formats (200+ file types), supporting a wide array of advanced file and
archive management features (search, bookmarks, thumbnail viewer, <a
 href="duplicates-hash-checksum.html">find duplicate files</a> and
compute hash/checksum value, add, update and <a
 href="edit-file-in-archive.html">edit files inside existing archives</a>,
            <a href="convert-files.html">convert
archive files</a>...),
especially focused
on security (<a href="encrypt-files.html">strong file encryption</a>,
two
factor authentication, encrypted
password manager, <a href="secure-delete.html">secure file deletion</a>...).<br>
The distinctive trait of PeaZip is the innovative and easy to use
compression/extraction interface, more similar to CD burners interfaces
rather than to a classic file compressor. This design makes extremely
simple to check (and update) items set for compression and extraction,
integrating a full featured file manager component.<br>
Also, tasks created in the GUI can be easily saved as batch scripts, in
order to <a href="backup-files.html">automate backup</a> operations,
or for fine tuning, or for
learning purpose, bridging the gap between the ease of use of GUI
applications and power and flexibility of console.<br>
            <br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="0" cellspacing="0">
              <tbody>
                <tr>
                  <td style="vertical-align: top; text-align: right;"> <img
 title="PeaZip Microsoft Windows"
 alt="what is peazip free file archiver" src="peazip-thumb.jpg"
 style="width: 352px; height: 226px;"> <img title="PeaZip Ubuntu"
 alt="install 7-zip paq frontend on linux" src="peazip-linux-thumb.png"
 style="width: 382px; height: 226px;"> </td>
                  <td
 style="vertical-align: top; text-align: right; width: 128px;"><a
 href="screenshots-peazip-1.html"><img
 title="PeaZip Linux / Windows screenshots"
 alt="learn more about peazip 7-Zip FreeArc PAQ PEA frontend"
 src="rar-files/open-rar-file.png"
 style="border: 0px solid ; width: 24px; height: 32px;"><br>
Give a look to other<br>
PeaZip screenshots</a></td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(240, 240, 240); width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr align="left">
            <td
 style="background-color: rgb(255, 255, 255); vertical-align: top;">
            <h2><big><big><big><a name="free_file_archiver"></a><a
 href="peazip-free-archiver.html#file_archiving_software">How to
install / uninstall PeaZip free file archiver utility<br>
            </a></big></big></big></h2>
            <div style="text-align: right;"><br>
            <div style="text-align: left;">
            <h3><big><a name="file_archiver_for_microsoft_windows"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Install and
run PeaZip on Windows</a></big></h3>
            <big> </big></div>
            </div>
            <br>
PeaZip 64 bit free archiver is meant to run on 64 bit Microsoft Windows
systems only, while PeaZip is meant to run on any 32 or 64 bit Windows
version.<br>
You can check if you are running a 64 bit MS Windows operating system
rightclicking on the "Computer" icon on the desktop and reading the
system type in "Properties".<br>
This program requires full Win32 support, so it is compatible with any
desktop PC and tablet home or professional Microsoft Windows system, or
compatible API (Wine, ReactOS), but it is not officially
supported on Windows RT devices.<br>
            <br>
Windows 9x and NT4 are no longer supported, starting from release 5.5.2
(2014 12 23) as 7x 9.35 backend requires Windows 2000 or newer system;
last version supporting Windows 9x and NT4 is PeaZip 5.5.1, see <a
 href="https://osdn.net/projects/peazip/releases/66163">Experimental
&amp; legacy</a> directory. Older
releases are available <a target="_blank"
 href="https://sourceforge.net/projects/peazip/">here</a>.<br>
            <br>
To run unattended installation launch the Windows installer with
/SILENT parameter; use /VERYSILENT for background installation, without
notification to the users.<br>
To re-configure system integration (file associations, context and
SendTo menu), you can use Options &gt; System integration.<br>
During install, PeaZip creates entries in SendTo menu that can be
simply copied to one user to another as needed, they are located in
C:\Documents and Settings\(username)\SendTo (Windows XP) or
C:\Users\(username)\AppData\Roaming\Microsoft\Windows\SendTo (Vista/7),
assuming C as system's disk.<br>
            <br>
PeaZip can be uninstalled from Add/Remove Programs in system's Control
Panel.<br>
Alternatively you can uninstall it from Start menu PeaZip &gt;
Uninstall PeaZip entry, or running unins000.exe in PeaZip's
installation path.<br>
When uninstalled, PeaZip restores files association with Windows'
Compressed Folders for the supported file types; to restore file
associations with a third party file archiver software please refer to
its own documentation, usually it can be done running the program's
setup package or from the original application itself. To manually
restore file associations with Compressed Folders utility run: cmd /c
assoc .zip=CompressedFolder replacing .zip with any file extension it
is desired to be re-associated.<br>
            <br>
            <h3><big><span style="color: rgb(0, 0, 0);"><a
 name="linux_file_archiver"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Install and
run PeaZip on Linux</a></span></big></h3>
            <br>
To add PeaZip to <span style="font-weight: bold;">Gnome </span>menu
copy the "Archiving" folder placed
in PeaZip/Freedesktop_integration/nautilus-scripts to system's Nautilus
script's folder (in most versions open "Scripts" menu in
system's context menu, and select "Open script's folder").<br>
            <br>
PeaZip is meant to be <span style="font-weight: bold;">desktop
neutral </span>as possible, so it is not limited to be used under
KDE and Gnome, and does not requires different packages to run on
different desktop environments.<br>
On PeaZip's official website are featured generic Linux packages,
meant to be compatible with as many distributions and versions as
possible, providing the system supports the widgetset (<span
 style="font-weight: bold;">GTK2 </span>* or <span
 style="font-weight: bold;">Qt </span>**).<br>
            <br>
Third party packages
explicitly targeted to a specific
distribution/version can be found from external links and in official
distribution's repositories,
those packages are highly recommended for best integration with a
specific Linux distribution / version.<br>
            <span style="font-style: italic;">If PeaZip is missing in
your distribution's repositories please take
time to recommend it to distribution's maintainers, pointing them to
this website for evaluating possible advantages in featuring PeaZip<br>
            <br>
            </span>If a package does not run on a specific system
please launch peazip
binary on a console to get a more detailed error report.<br>
            <br>
Please
note that ia32-libs are
required to run PeaZip, as any other 32 bit binary, on 64 bit systems.<br>
            <br>
If you are interested in ARM architecture porting (including support
for Google Android / ChromeOS) you can refer to <a
 href="peazip-linux-arm.html">Linux for ARM</a> page.<br>
            <br>
* On some Linux distributions the GTK2
version may require to install some components of gtk/gdk
libraries, like libgdk_pixbuf,
those components are quite common and can be usually found in
repositories of each distribution.<br>
            <br>
** Qt widgetset packages
requires Qt
4.5 or
more recent, and needs libQt4Pas.so
installed in /usr/local/lib or equivalent directory (copy the
file and run ldconfig; it is done automatically in installable
packages), such as
/usr/lib or /usr/lib32 on some 64 bit distributions.<br>
A copy of
libQt4Pas.so is available in PeaZip's directory,
./usr/local/share/PeaZip/ for the installable packages.<br>
If the Qt version
does not start on some systems, as some system's visual styles may
cause recursive repainting error, you can fix the problem starting it
in a console (or script) as: peazip -style=cleanlooks<br>
            <br>
            <big><a name="apple_rar_expander_osx"></a></big><a
 href="peazip-free-archiver.html#file_archiving_software"><big>Other
systems</big><br>
            </a><br>
            <a href="peazip-bsd.html">PeaZip Portable for BSD</a>
contains natively compiled peazip, pea,
pealauncher, and p7zip executables, providing most of the program's
funtions are performed by native binaries.<br>
For other backends, Linux binaries are used due to binary compatibility
provided by BSD systems to Linux executables.<br>
It is a Portable version of PeaZip, that means no installation is
required: the Portable application is autocontained, so the software
can be unpacked and used starting peazip executable, see next paragraph
for more information.<br>
BSD binaries are precompiled for i386 and GTK2; ia-32 libs needs to be
installed in ia64 systems.<br>
Alternatively, PeaZip Portable for Linux packages (GTK2 or Qt) can be
used on BSD systems.<br>
            <br>
Please refer to those instructions for porting or running <a
 href="mac-osx-rar-zip-utility.html">PeaZip on Apple Mac OSX</a>
systems.<br>
            <br>
            <h3><big><a name="portable_file_archiver"></a></big><a
 href="peazip-free-archiver.html#file_archiving_software"><big>Portable
software versions</big><br>
            </a></h3>
            <span style="color: rgb(0, 0, 0);"></span><br>
PeaZip Portable is available either for Microsoft Windows and Linux, it
            <span style="font-weight: bold;">does not
require installation</span> / unistallation and <span
 style="font-weight: bold;">does
not modify your system </span>so it is recommended if you want to test
the
application, to run it from a removable device, to make it available
over the network avoiding local installations, or if you should not
modify host system (i.e. library freeze in production machines).<br>
To use the program simply unzip the package where you like, i.e to a
removable device, to bring the application with you, or to a network
path, to share the application with other users, or just to the desktop.<br>
To remove the program simply delete PeaZip's directory. </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(240, 240, 240); width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr align="left">
            <td
 style="background-color: rgb(255, 255, 255); vertical-align: top;"><big><big><big><a
 name="file_compression_software"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Notes</a></big></big></big><br>
            <br>
            <h3><big><a name="how_to_use_peazip"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Notes for
users</a></big></h3>
            <span style="color: rgb(0, 0, 0);"></span><br>
PeaZip free file
archiver is
available
in many different languages,
click Options &gt;
Localization to modify <span style="font-weight: bold;">language </span>of
the GUI. If you are willing to
contribute a translation please check
information Notes for translators below to know how to
contribute.<br>
            <br>
Over networks, this
application can be
made available to multiple users,
either with a shared configuration or with separate configuration for
each user, see "Settings" and "Customization and
scripting" in the help file (F1), that also contain useful hints for
enhancing PeaZip's system integration
and use of PeaZip in scripts.<br>
PeaZip is built to be fully modular, you can freely replace backend
executables in PeaZip/res directory with updated ones (as long as they
support the
same syntax) or with 64 bit
counterpart if available.<br>
If the host system cannot or should not be modified it is recommended
to use PeaZip Portable, that
runs without installation and can be simply extracted in any path, even
on the
network or on
removable devices as USB memories.<br>
            <br>
            <span style="text-decoration: underline;"><span
 style="font-weight: bold;"></span></span><span
 style="font-weight: bold;"><a href="ace-files-utility.html">Extraction
of
ACE files</a></span> is
possible installing a separate plugin (due to UNACE freeware but closed
source
nature) available
in <a style="font-weight: bold;" href="peazip-add-ons.html">Add-ons</a>
page.<br>
Please note ACE support is NOT featured out of the box and requires
optional (an dnot recommended) manual installation of UNACE Plugin.<br>
Because ACE format and closed source UNACE binary are no longer
actively maintained, hanlding ACE archives is no longer considered
secure, and UNACE components are not featured in standard PeaZip
packages to avoid ACE-related security issues.<br>
            <br>
            <span style="text-decoration: underline;"><span
 style="font-weight: bold;"></span></span><a style="font-weight: bold;"
 href="free-rar.html">Extraction of RAR / RAR5
files</a> (created with WinRar using "rar5" option) is now natively
supported by PeaZip and UNRAR / UNRAR5 Plugin (based on RarLab's code)
is no
longer needed, but still available as alternative rar extraction engine.<br>
            <span style="font-weight: bold;"> </span><br>
            <span style="font-weight: bold;"> </span>
            <div style="text-align: left;">
            <h4><span style="font-weight: bold;">UTF-8
support</span></h4>
            </div>
            <div style="text-align: left;">PeaZip GUI is fully UTF-8
compliant since release 2.2.0, and internal filename handling functions
can work with UTF-8 filenames since release 3.0.1 in Linux, and since
release 5.8.0 in Microsoft Windows.<br>
For more information check UTF-8 <a target="_blank"
 href="http://wiki.lazarus.freepascal.org/LCL_Unicode_Support">support
status in Lazarus/FreePascal<img alt="unicode rar zip files"
 title="Unicode file names support" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> and PeaZip
sources comments.<span style="font-style: italic;"></span><br>
            </div>
            <span style="font-style: italic;"> </span><br>
            <div style="text-align: left;">
            <h4><span style="font-weight: bold;">Custom
drag and drop
(Windows)</span></h4>
On MS Windows systems PeaZip uses a custom <a
 href="screenshots-peazip-3.html">drag and drop
extraction</a> (from application to system) that doesn&#8217;t need
to copy files being dragged to system&#8217;s temp folder before, resulting
in faster operation when big files are involved, and in better security
if temp folder has not the same desired security policies of actual
output folder.<br>
            </div>
            <br>
            <div style="text-align: left;"> <span
 style="font-weight: bold;">PEA
archive type
limitations</span><br>
Such a list can be all but complete, however: when I designed <a
 href="pea-file-format.html">PEA
archive format</a> I was less experienced and I basically didn't take
in
account the need to browse the archive or to partially extract objects;
just to create and extract it.<br>
Since filenames are, by design, saved along file streams, there is not
an easy way to accomplish it without parsing the entire archive (which
can be a reasonable solution only for small archives) or without
changing format specifications breaking the compatibility with former
versions.<br>
A workaround I may implement in future to allow archive browsing could
be creating an extra text filecontaining filenames, saved as first
archive's object; that will not introduce backward incompatibility
since previos PEA version could still correctly handle the new archives
(just having the list-file as extra content) and will be quite painless
introducing negligible space and speed payload, unless archiving many
small files.<br>
This is just an hypothetical evaluation and there still is not a
roadmap about it. Anyway this is a PEA format related issue has no
impact on users using PeaZip to handle formats other than PEA.<br>
            <br>
            <h3><span style="font-weight: bold;">Cryptoanalisys</span></h3>
            </div>
You can find a stub of
cryptoanalisys of PEA archive format on <a href="pea_help.pdf">PEA
online help (.pdf)</a><br>
            <br>
For tutorial, and for contacts, see <a href="peazip-help.html"><span
 style="font-weight: bold;">Support (help)</span></a>
page.<br>
For question&amp;answers about common usage topics, see <a
 href="peazip-help-faq.html"><span style="font-weight: bold;">Frequently
Asked Questions</span></a>
page<br>
            <br>
            <h3><big><a name="software_translations"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Notes for
translators</a></big></h3>
            <span style="color: rgb(0, 0, 0);"></span><br>
            <h4><span style="font-weight: bold;">How to provide or
maintain
a translation</span></h4>
            <br>
Language files are UTF-8 encoded
text files which can be edited using any suitable text editor.<br>
            <br>
To create a new translation file you can:<br>
1 - copy default.txt (in PeaZip's path in /res/lang subfolder) or any
other language file, if you prefer starting from another language, to a
new file;<br>
2 - edit lines 2 to 6 of the document to enter language name (both in
English and in the original language for better readability), PeaZip's
version (major.minor) the translation is aimed to, translator's and
last last revisor's name and last revision date; <span
 style="font-style: italic;">IMPORTANT:
revision number must not be
specified alongside major.minor release number in 3rd line of language
files since
revisions shares the same text and are meant to deploy between-releases
updates, ie.e for bugfixing or for packaging additional translations or
resources.</span><br>
            <span style="font-style: italic;"> </span>3 -
translate
the text after the
"variable_name: " part in
"=== PeaZip text group ===" AND "=== PeaLauncher text group ==="
sections of the file (don't move or remove lines, don't change the
"variable_name: " part);<br>
4 - optionally, translate the mini-tutorial after "=== about text group
===" line (free editing, it is loaded and displayed "as is" as
application's mini-tutorial); it is very important to improve usability
of the program for non-English speaking users.<br>
            <br>
In <a target="_blank"
 href="https://github.com/giorgiotani/PeaZip-Translations">PeaZip
Translations</a> directory on GitHub you can find a package named <span
 style="font-weight: bold;">peazip-x.y.z.about_translations.zip</span>
(in x.y release subdirectory) containing a spreadsheet file to help
in creating and maintaining localizations, simply compiling column D of
the spreadsheet.<br>
IMPORTANT: the spreadsheet contains 3 pages, "PeaZip text group",
"PeaLauncher text group", and "About text group": all pages need to be
completed and pasted (column E, for first two pages) in the language
file; the "About text group" can be freely edited.<br>
The spreadsheet shows variable name (column B), corresponding text
string in english (column C) and a blank, yellow column (D) for typing
the translated text strings.<br>
On the right, a column E (blue) will show the "variable_name: " part
assembled with the translated string: the content of this area can be
copied and paste to replace the text in "=== PeaZip text group ===" and
"=== PeaLauncher text group ===" sections (the spreadsheet features TWO
pages, one for each of the two groups).<br>
Lines must be pasted in the original order (it is sufficient to sort
them by column F).<br>
            <br>
After column F are featured all currently available translations, in
order to help translators more proficient in other languages than
Englis, and to help to spot out what localizations need to be updated.<br>
At each version all language files are mass-updated, with missing text
lines in English; to update a localization, it's enough to update the
English text lines.<br>
For a better result it is also recommended to check all the language
file to see if the update is coherent with linguistic style used by the
translator of the current version.<br>
For languages spoken in different ways in different countries (i.e.
English, Spanish, Portuguese...) it is recommended to fork the
translation, creating i.e. en-us, pt-br etc<br>
Default language file is default.txt<br>
            <br>
Translated language files
can be sent to me using the address&nbsp;<a
 href="mailto:giorgio.tani.software@gmail.com">giorgio.tani.software@gmail.com</a>
(don't forget to remove the _removethis_ part), to be evaluated for
inclusion in future updates and publication on PeaZip's Translations
directory.<br>
All translated language files should be considered as released under
GFDL, GNU Free Documentation License, as they have to be considered
derivate work from the application's language file which is released
under GFDL.<br>
            <br>
            <h3><big><a name="software_development"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Notes for
developers</a></big></h3>
            <br>
PeaZip free archiver
utility
sources are contained
in the peazip-*.src.zip package.<br>
PeaZip and PeaZip_portable shares the same sources being PeaZip
installable basically the same portable application packaged into an
installable format: Inno Setup's .exe for Microsoft Windows, DEB, RPM
and TGZ for
Linux.<br>
            <br>
            <h4><span style="font-weight: bold;">Compilation, build
and
porting </span></h4>
PeaZip, Pea and PeaLauncher are written in FreePascal (highly
compatible with Delphi and ObjectPascal languages) and require <a
 target="_blank" href="http://sourceforge.net/projects/lazarus/">Lazarus
IDE<img alt="delphi like language" title="Lazarus FreePascal IDE"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a><a
 href="http://sourceforge.net/projects/lazarus/"><span
 style="font-weight: bold;"></span></a> to
be compiled; Windows setup
scripts (.iss files) are developed using Inno Setup. <br>
To compile PeaZip binaries open the .lpi file of the desired binary
(i.e. peach.lpi for peazip binary) and select "build all". <br>
FreePascal supports multiple widgetsets (Win32, WinCE, GTK1, GTK2, Qt,
Carbon, fpGUI) to allow compilation of GUI applications for the various
supported systems and to create different &#8220;flavours&#8221; of the application
for platforms supporting multiple widgetsets (i.e Linux). <br>
PeaZip's sourcecode is cross platform, platform-specific code portions
are contained in conditional compilations blocks. <br>
Deploying the application to other targets than MSWINDOWS and LINUX may
require adaptation of those platform specific areas (and possibly other
fine-tunings); PC-BSD users successfully built PeaZip on *BSD platform.
            <br>
PeaZip will also need various backend compression and archiving
applications to be reachable in expected directories within the
application's path, please refer to the structure of any of the
precompiled packages, either installable or portable, to see what third
parts binaries must be included, and refer to respective Authors for
ports of those utilities; also read the help file readme.txt in the
source's package for more
hints.<br>
Being PeaZip programmed as frontend/backend application, missing or
unwanted backend binaries can be omitted, at the cost of losing the
ability of handling supported formats; for the same reason, backend
binaries can be freely replaced with 64 bit counterparts or with
updated versions (which will work fine as long as they follow the same
syntax).<br>
PeaZip code should be fairly easy to port on Delphi and other Pascal
dialects; the underlying crypto
library<span style="font-weight: bold;"></span>,
developed and maintained by
Wolfgang Ehrhardt, is explicitly written to be portable to most or all
Pascal dialects, however due to some ASM parts some of its features may
be x86 processor specific.<br>
Some units of the crypto
library uses ASM sections not fully compatible with 64 bit
Lazarus/FPC compiler, but the library provides also pure Pascal
replacement for those units in order to allow compilation in those
environments.<br>
            <br>
            <h4><span style="font-weight: bold;">Packages testing</span></h4>
            <br>
PeaZip free archiver should run on all MS Windows and Linux systems,
the program is currently tested on:
            <ul>
              <li>Windows 98SE (versions lower than
PeaZip 5.5.1)</li>
              <li>Windows 2000/XP</li>
              <li>Windows Vista/7/8.1/10 32 and 64 bit</li>
              <li>various x86 and x86-64 Linux
distributions with GTK2 or Qt, both for Gnome and KDE</li>
            </ul>
            <br>
            <h4><span style="font-weight: bold;">PEA archive support in
third
parts software</span></h4>
To support Pea file format in your applications you may follow one of
those ways:<br>
            <ul>
              <li>use directly the executable Pea
archiving utility (LGPL freeware) passing parameters through command
line, as in PeaZip;</li>
              <li>use Pea source code as library to call
Pea-related functions from your code (as in the demo application in
"sources" package);</li>
              <li>create a new implementation following
the file format specifications, which are released under public domain
and, as for what is known to the author, are free and unencumbered for
any use.</li>
            </ul>
            <br>
            <h4><big><a name="software_engineering"></a><a
 href="peazip-free-archiver.html#file_archiving_software">Third party
technlologies</a></big></h4>
            <div style="text-align: left;"><br>
PeaZip acts as graphic frontend for multiple "engines"
performing archiving, compression, encryption and volume split
features: manage, open and extract Zip
archives, unzip
files, free Rar
extractor
(unrar), extract Tar files on Windows (untar), create and convert
archives, create compressed,
spanned and password protected backup, compress and attach files and
folders,
encrypt files, split and join files (file spanning), secure file
delete. </div>
            <ul style="text-align: left;">
              <li><a href="pea-archiving-utility.html"><span
 style="font-weight: bold;">Pea</span></a>
(Giorgio Tani,
LGPLv3) archiving utility featuring authenticated encryption; both
PeaZip and Pea uses <a href="pea-archiving-utility.html">Wolfgang
Ehrhardt's Pascal/Delphi crypto
library</a><span style="font-weight: bold;"></span> </li>
              <li><a target="_blank" href="http://www.7-zip.org/"><span
 style="font-weight: bold;">7z</span><span style="font-weight: bold;"></span></a>
(Igor
Pavlov, LGPL) and <a target="_blank"
 href="http://p7zip.sourceforge.net/"><span style="font-weight: bold;">p7zip</span><span
 style="font-weight: bold;"></span></a>
(Myspace,
LGPL, the POSIX port of 7z for Unix systems), supporting most of the
mainstream archiving and compression formats; McMilk <a
 style="font-weight: bold;" href="https://github.com/mcmilk/7-Zip-zstd">codecs</a>
adding support
to Brotli, FastLZMA, Lizard, LZ4, LZ5, and Zstd through 7z binary (Tino
Reichardt, LGPL).<span style="text-decoration: underline;"></span> </li>
              <li><a target="_blank"
 href="http://freearc.sourceforge.net/"><span style="font-weight: bold;">ARC</span><span
 style="font-weight: bold;"></span></a>
(Bulat
Ziganshin, GPL) FreeARC archiver, featuring high compression and strong
encryption</li>
              <li><a style="font-weight: bold;"
 href="https://github.com/google/brotli">Brotli</a> (Google / Jyrki
Alakuijala, Eugene Kliuchnikov, Robert Obryk, Zolt&aacute;n Szabadka,
Lode Vandevenne, MIT License) fast data compression utility<br>
              </li>
              <li><a target="_blank"
 href="http://www.mattmahoney.net/dc/"><span style="font-weight: bold;">PAQ/LPAQ/ZPAQ</span><span
 style="font-weight: bold;"></span></a>
(Matt
Mahoney and other contributors, GPL) various compression utilities, the
current state of art for maximum compression ratio, multiple times
winner (in original or custom forms) of <a target="_blank"
 href="http://prize.hutter1.net/">Hutter Prize<img
 title="Hutter Prize for Compressing Human Knowledge"
 alt="artificial intelligence and data compression research"
 src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> <a
 target="_blank" href="https://en.wikipedia.org/wiki/Hutter_Prize">Wikipedia
entry
about Hutter Prize<img title="Hutter Prize AI and compression"
 alt="text compression as hard AI problem" src="free-rar/extractor.png"
 style="border: 0px solid ; width: 12px; height: 10px;"></a> </li>
              <li><a target="_blank"
 href="http://sourceforge.net/projects/quad/"><span
 style="font-weight: bold;">QUAD</span><span style="font-weight: bold;"></span></a>
(Ilia
Muraviev, LGPL), <a target="_blank"
 href="http://sourceforge.net/projects/balz/"><span
 style="font-weight: bold;">BALZ</span><span style="font-weight: bold;"></span></a>
and <a style="font-weight: bold;" target="_blank"
 href="http://sourceforge.net/projects/bcm/">BCM</a> (Ilia
Muraviev, public domain) compression utilities </li>
              <li><a target="_blank" href="http://upx.sourceforge.net/"><span
 style="font-weight: bold;">UPX</span><span style="font-weight: bold;"></span></a>
(Markus
F.X.J. Oberhumer, L&aacute;szl&oacute; Moln&aacute;r and John F.
Reiser, GPL), compression utility for binaries, and <a target="_blank"
 href="http://www.gnu.org/software/binutils/"><span
 style="font-weight: bold;">Strip</span><span style="font-weight: bold;"></span></a>
form GNU
binutils (GPL) </li>
              <li><a target="_blank" href="http://www.winace.com/"><span
 style="font-weight: bold;">UNACE</span><span style="font-weight: bold;"></span></a>
(Marcel
Lemke, ACE Compression Software, royalty-free UNACEV2.DLL license)
UNACEV2.DLL 2.6.0.0 and UNACE for Linux (royalty-free UNACE for Linux
license) extractor for ACE files</li>
              <ul>
                <li>being non compliant with OSI approved licenses, it
is
available as separate download on Add-Ons page as <a
 href="peazip-add-ons.html#open_ace_file">PeaZip UNACE Plugin</a><br>
                </li>
              </ul>
              <li><a style="font-weight: bold;" target="_blank"
 href="http://www.rarlab.com/rar_add.htm">UNRAR</a> (Eugene Roshal,
royalty-free license from RarLab/Win.Rar GmbH, source code is available
but subject to licensing restriction in order to disallow creating a
rar compressor) extractor for RARv5 files</li>
              <ul>
                <li>being non compliant with OSI approved licenses due
unrar
licensing restriction, it is available as separate download on Add-Ons
page as <a href="peazip-add-ons.html#open_rar5_file">PeaZip UNRAR5
Plugin</a> (no longer needed on recent releases, still featured as
alternate rar decompression engine).</li>
              </ul>
              <li><a style="font-weight: bold;"
 href="https://facebook.github.io/zstd/">Zstd</a> (Facebook / Yann
Collet, Przemys&#322;aw Skibi&#324;ski, dual license BSD License and GPLv2)
Zstandard fast data compression utility<br>
              </li>
            </ul>
            <div style="text-align: left;">Open source
archiving and
compression utilities are included in the
program&#8217;s package and ready to use; all software included in the
package is released under <span style="font-weight: bold;">OSI
approved licenses</span>. UNACE and UNRAR5 are available as separate
downloadable
plugin since, while royalty free, are not released under an
OSI-approved open source license. <br>
Self-extracting archives are supported, built using 7-Zip's sfx modules
(with custom icons and compressed with UPX in order to minimize the
overhead added to the archive) and alternatively FreeArc's sfx modules.
Custom third parts modules distributors are linked in Add-ons page.<br>
            </div>
            <br>
            <h4><big><a name="software_design"></a></big><a
 href="peazip-free-archiver.html#file_archiving_software"><big>Project's
goals</big><br>
            </a></h4>
            <br>
            <table style="width: 100%; text-align: left;" border="0"
 cellpadding="24" cellspacing="0">
              <tbody>
                <tr>
                  <td style="width: 48px; vertical-align: middle;">
                  <h2><img title="PEA file format development"
 alt="free frontend for paq archiver utility" src="file-format/one.png"
 style="width: 48px; height: 48px;"></h2>
                  </td>
                  <td style="vertical-align: middle;"><span
 style="font-weight: bold;">PEA
- Pack
Encrypt
Authenticate</span> <br>
                  <br>
The initial goal of the application was
creating
a frontend for Pea archiver utility, implementing PEA archive format,
designed ground up by myself to primarily focus on security and
integrity: I wanted something performing strong authenticated
encryption and perform integrity checks on both input objects and
output volume(s). Pea offer those characteristics, and is open source
(LGPL) freeware; file format specifications are released under public
domain. I did a bit of cryptanalisys of it (see Documentation package);
I hope more authoritative people may analyze it further.<br>
                  <br>
Most archivers offer strong encryption, but
bounded to password-only auhentication: Pea executable offers two
factor authentication to increase encryption's security margins against
password-related threats, like social engineering, dictionary attacks,
bruteforcing, keylogging...<br>
                  </td>
                </tr>
                <tr>
                  <td style="width: 48px; vertical-align: middle;">
                  <h3><img title="Lazarus FPC development"
 alt="free frontend for 7-zip archiver utility"
 src="file-format/two.png" style="width: 48px; height: 48px;"></h3>
                  </td>
                  <td style="vertical-align: middle;"><span
 style="font-weight: bold;">Bring
focus
on
Lazarus/FreePascal</span><br>
                  <br>
I'm developing PeaZip project in FreePascal
language, under Lazarus IDE. I like Pascal-related languages and I
think Lazarus/FreePascal is one of the best cross-platform IDE
available; I like it even more because it is open source and because
it's growing day by day in a more mature and powerful IDE. I'll be glad
to bring a bit of developer's attention on Lazarus/FreePascal through
my project.<br>
                  </td>
                </tr>
                <tr>
                  <td style="width: 48px; vertical-align: middle;">
                  <h2><img
 title="Archiving and compression mutiple formats"
 alt="what is file archiver utility" src="file-format/three.png"
 style="width: 48px; height: 48px;"></h2>
                  </td>
                  <td style="vertical-align: middle;">
                  <h3><span style="font-weight: bold;">Archiving
and compression</span> </h3>
                  <br>
Designing PeaZip UI, I'm aiming to focus on
archive-specific tools, operations and needs rather than focusing on
offering a faithful emulation of a file browser, like many mainstream
archivers does. Saving lists of objects to be archived, saving
archiving/extraction job definitions and receiving detailed job log
after operations are primary goals of PeaZip UI. However, PeaZip's
system integration, if desired, allows the user to perform most common
operations (add to archive, extract here, encrypt, split file etc)
without even care of the main program UI.<br>
                  <br>
                  <div style="text-align: left;"> </div>
7-Zip (and Myspace
p7zip POSIX port) : thanking Igor Pavlov 7z choice of
offering code licensed under LGPL I was able to easily add support to
many
mainstream archive and compression formats to PeaZip, transforming it
from a niche project (formerly named Pea-Peach) to a possibly wider
targeted software. I hope I can turn back to them part of the benefit
supporting .7z archive format, especially on Linux systems, offering a
ready to use solution to extract and archive in .7z format among
others.<br>
                  <br>
ARC: a new, very promising archive format,
featuring powerful but efficient compression, strong encryption and
recovery records.<br>
                  <br>
Brotli: fast data compression algorithm backed by Google and made
available as single file compressor<br>
                  <br>
PAQ/LPAQ/ZPAQ: one of the most promising
research project in the field of maximum compression is Matt Mahoney's
Paq.
Many different implementation and branches exists, as command line
binaries and or integrated in archivers with GUI (like WinRK, WinUDA,
KGB Archiver etc). PeaZip act as GUI fronted to various *Paq, hoping to
contribute
to the diffusion of this high compression format and in bringing focus
on this
interesting research project.<br>
                  <br>
QUAD/BALZ/BCM: Ilia Muraviev's very
promising single file compression software featuring high compression
ratio and fast decompression, making them very well suited in scenarios
were decompression occurs more often than compression (i.e. package
release).<br>
                  <br>
Strip/UPX: to provide a GUI frontend for Strip/UPX that comes to be
very handy for developers to reduce executables size.<br>
                  <br>
Zstandard: fast data compression algorithm backed by Facebook and made
available as Zstd single file compressor<br>
                  <br>
Two factor authentication: since version 2.1
PeaZip can use keyfiles for any supported format featuring encryption.
The SHA256 hash of the keyfile (no size limit) is encoded in Base64
(RFC 4648) and prepended to the password. So, it is possible to work on
archives encrypted in that way using PeaZip or any application
following the same convention, or simply entering the Base64-encoded
hash as the first part of the password.</td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(240, 240, 240); width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr align="left">
            <td
 style="background-color: rgb(255, 255, 255); vertical-align: top;">
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(72, 136, 248);"><small><span
 style="color: rgb(253, 253, 253);">RELATED &amp; SIMILAR PAGES</span> </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="how-to-open-rar-tar-zip-files.html">HOW TO OPEN 7Z RAR TAR ZIP
ARCHIVES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="pea-file-format.html">PEA FILE FORMAT SPECS</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="what-is-zip-file.html">WHAT IS FILE ARCHIVING</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <small><small>&nbsp;</small></small><br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="how-to-extract-rar-zip-archives.html">HOW TO EXTRACT 7Z RAR TAR
ZIP
ARCHIVES</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="pea-archiving-utility.html">PEA ARCHIVING UTILITY</a><br>
                  </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="extract-encrypted-files.html">OPEN AND EXTRACT ENCRYPTED 7Z RAR
ZIP FILES</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            <small>&nbsp;</small><br>
            <table style="text-align: left;" border="0" cellpadding="6"
 cellspacing="0">
              <tbody>
                <tr>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="free-rar.html">FREE RAR SOFTWARE</a> </small></td>
                  <td style="vertical-align: top;"><small><br>
                  </small></td>
                  <td
 style="vertical-align: top; background-color: rgb(240, 239, 238);"><small><a
 href="zip-files-utility.html">ZIP FILES UTILITY</a><br>
                  </small></td>
                </tr>
              </tbody>
            </table>
            </td>
          </tr>
        </tbody>
      </table>
      <table
 style="background-color: rgb(255, 255, 255); margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="24" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;">Tag Cloud<br>
            <span class="wrd free-rar3" id="pea-file-format"> <a
 href="pea-file-format.html">PEA encrypted file format</a></span> <span
 class="wrd free-rar0" id="cross-platform-file-archival-software"> <a
 href="peazip-bsd.html">BSD file archival software</a></span> <span
 class="wrd free-rar4" id="pack-encrypt-authenticate-utility"> <a
 href="pea-archiving-utility.html">Pack Encrypt Authenticate</a></span>
            <span class="wrd free-rar2" id="download-backup-utility"> <a
 href="backup-files.html">download backup utility</a></span> <span
 class="wrd free-rar0" id="file-hashing-utility"> <a
 href="verify-checksum-hash.html">file hashing utility</a></span><br>
            <span class="wrd free-rar1"
 id="free-rar-tar-zip-files-converter"> <a href="convert-files.html">free
rar tar zip files converter</a></span> <span class="wrd free-rar0"
 id="download-encryption-software"> <a href="encrypt-files.html">open
source encryption software</a></span> <span class="wrd free-rar1"
 id="file-splitting-utility"> <a href="file-split.html">file splitting
utility</a></span> <span class="wrd free-rar3"
 id="secure-deletion-software"> <a href="secure-delete.html">secure
deletion software</a></span> <span class="wrd free-rar0"
 id="batch-create-multiple-archives"> <a
 href="how-to-zip-files-separate-archives.html">batch create multiple
archives at once</a></span><br>
            <span class="wrd free-rar2"
 id="free-rar-files-compression-utility"> <a
 href="free-rar-create.html">RAR compression utility</a></span> <span
 class="wrd free-rar0" id="compress-files-folders"> <a
 href="how-to-compress-files-folders.html">compress
files and folders</a></span> <span class="wrd free-rar1"
 id="extract-rar-zip-archives"> <a
 href="how-to-extract-rar-zip-archives.html">extract rar tar zip files</a></span>
            <span class="wrd free-rar3" id="extract-encrypted-files"> <a
 href="extract-encrypted-files.html">extract encrypted files</a></span>
            <span class="wrd free-rar1" id="what-are-rar-files"> <a
 href="what-is-rar-file.html">what are RAR files</a></span> <span
 class="wrd free-rar0" id="linux-file-archiver"> <a
 href="peazip-linux-x86.html">linux
file archiver</a></span><br>
            <span class="wrd free-rar2" id="free-ace-files-opener"> <a
 href="ace-files-utility.html">free ACE
files opener</a></span> <span class="wrd free-rar4"
 id="free-rar-extractor"> <a href="free-rar.html">free
RAR extractor</a></span> <span class="wrd free-rar2"
 id="windows-tar-files-opener"> <a href="tar-windows.html">TAR files
opener</a></span> <span class="wrd free-rar4"
 id="free-zip-files-utility"> <span class="wrd free-rar0"
 id="arm-archive-manager"> <a href="peazip-linux-arm.html">ARM archive
manager</a></span> <a href="zip-files-utility.html">free
ZIP files utility</a></span> <span class="wrd free-rar1"
 id="free-iso-files-extractor"><a href="iso-utility.html">free ISO
extractor</a></span><br>
            <span class="wrd free-rar1" id="open-7zip-7z-archives"> <a
 href="7zip-files-utility.html">open
7-Zip archives</a></span> <span class="wrd free-rar3"
 id="microsoft-cab-file-format"> <a href="cab-file-format.html">.CAB</a></span>
            <span class="wrd free-rar0" id="manage-microsoft-wim-files">
            <a href="wim-utility.html">manage WIM files</a></span> <span
 class="wrd free-rar1" id="zipx-files-opener"> <a
 href="zipx-files-software.html">ZIPX files opener</a></span> <span
 class="wrd free-rar3" id="free-archiver-utility"> <a href="index.html">free
archiver utility</a></span> <span class="wrd free-rar1"
 id="download-encrytpion-utility"> <a href="index.html">download file
encryption utility</a></span> <span class="wrd free-rar0"
 id="macos-apple-archiver-utility"> <a
 href="mac-osx-rar-zip-utility.html">mac archiver utility</a></span> <span
 class="wrd free-rar3" id="ace-file-format"> <a
 href="ace-file-format.html">.ACE</a></span> <br>
            <span class="wrd free-rar2" id="file-compression-software">
            <a href="index.html">file compression
software</a></span> <span class="wrd free-rar0"
 id="file-archiving-utility"> <a href="peazip-64bit.html">64 bit file
archiving software</a></span> <span class="wrd free-rar3"
 id="portable-rar-files-utility"> <a href="peazip-portable.html">portable
file archiver
software</a></span> <span class="wrd free-rar0"
 id="linux-file-compression-utility"> <a href="peazip-linux.html">linux
file compression utility</a></span> <span class="wrd free-rar2"
 id="windows-free-archiver"> <a
 href="download-installer-p-windows.html">windows free archiver</a></span>
            <br>
            <span class="wrd free-rar3" id="zip-format"> <a
 href="zip-file-format.html">.ZIP file format</a></span> <span
 class="wrd free-rar1" id="free-cab-files-extractor"> <a
 href="cab-files-utility.html">free CAB files
extractor</a></span> <span class="wrd free-rar2"
 id="peazip-winrar-winzip-compression-benchmarks"> <a
 href="peazip-compression-benchmark.html">PeaZip benchmarks</a></span> <span
 class="wrd free-rar1" id="peazip-online-rar-zip-utility-tutorial"> <a
 href="peazip-help.html">online help</a></span> <span
 class="wrd free-rar3" id="peazip-online-compression-faq"> <a
 href="peazip-help-faq.html">PeaZip
FAQ</a></span> <span class="wrd free-rar0"
 id="free-rar-zip-windows-application"> <a href="peazip-64bit.html">free
7z rar tar zip application for Windows 64 bit</a></span><br>
            </td>
          </tr>
        </tbody>
      </table>
      <br>
      </td>
    </tr>
    <tr align="center">
      <td
 style="vertical-align: top; background-color: rgb(243, 242, 241);">
      <table
 style="margin-left: auto; margin-right: auto; width: 960px; text-align: left;"
 border="0" cellpadding="0" cellspacing="0">
        <tbody>
          <tr>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
            <td style="vertical-align: top;"><br>
            </td>
          </tr>
          <tr>
            <td style="vertical-align: top; width: 25%;"><small> <img
 alt="lazarus freepascal development" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a name="free_archiver_utility_notes_for_developers"></a>DOWNLOADS<br>
            <img alt="what is peazip file archiver"
 src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
 vspace="3"><br>
            <a href="index.html">All
PeaZip downloads</a><br>
            <a href="download-installer-p-windows.html">PeaZip for
Windows 32 bit</a><br>
            <a href="peazip-64bit.html">PeaZip
for Windows 64 bit</a><br>
            <a href="peazip-portable.html">PeaZip
Portable</a><br>
            <a href="peazip-linux.html">PeaZip
Linux/BSD</a><br>
            </small></td>
            <td style="vertical-align: top; width: 25%;"><small><img
 alt="what is peazip free 7zip paq frontend" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a name="file_archiver_notes_for_users"></a>SUPPORT<br>
            <img alt="install paq frontend on linux"
 src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
 vspace="3"><br>
            <a href="peazip-help.html">Online
help</a><br>
            <a href="peazip-help-faq.html">Frequently
Asked Questions</a><br>
            <a href="peazip-free-archiver.html">More
information</a></small><br>
            </td>
            <td style="vertical-align: top; width: 25%;"><small><img
 alt="how to install file archiver on linux" src="titles.png"
 style="width: 129px; height: 2px;"><br>
            <a style="color: rgb(0, 0, 0);"
 name="how_to_install_free_file_archiver_for_windows_and_linux"></a>DONATE<br
 style="font-style: italic;">
            <img alt="how to install 7-zip on linux"
 src="free-rar/extract-rar.png" style="width: 1px; height: 1px;"
 vspace="3"><br style="font-style: italic;">
Support
PeaZip
project,
or donate to FAO,
UNICEF and
UNESCO from <a style="font-style: italic;" href="donations.html">donation
page</a><br>
            <br>
            </small><small>&copy; <a href="peazip-tos-privacy.html"
 style="font-weight: normal;">PeaZip
srl: TOS,
Privacy</a></small><br>
            </td>
            <td style="vertical-align: top; width: 247px;">
            <table
 style="width: 100%; text-align: left; margin-left: auto; margin-right: 0px;"
 border="0" cellpadding="3" cellspacing="0">
              <tbody>
                <tr>
                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank"
 href="https://github.com/giorgiotani/PeaZip/releases.atom">Releases
Feed</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="free frontend for 7-zip archiver utility"
 title="PeaZip releases feed" src="extract-zip/rss16.png"
 style="width: 24px; height: 24px;" align="middle"></small></td>
                </tr>
                <tr>
                  <td style="text-align: right; vertical-align: middle;"><small><a
 target="_blank" href="https://github.com/giorgiotani/PeaZip/wiki">PeaZip
Wiki</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 title="PeaZip Wiki online" alt="freearc gui frontend"
 src="free-zip/wikipedia.png" style="width: 24px; height: 24px;"
 align="middle"></small></td>
                </tr>
                <tr>
                  <td style="text-align: right; vertical-align: middle;"><small><a
 href="mailto:giorgio.tani.software@gmail.com">Developer email</a></small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="how to install paq archiver frontend"
 title="Mail developer | Giorgio Tani" src="free-zip/mail.png"
 style="width: 24px; height: 24px;"><br>
                  </small></td>
                </tr>
                <tr>
                  <td style="text-align: right; vertical-align: middle;"><small><a
 href="peazip-more.html">Search knowledge-base</a><br>
                  </small></td>
                  <td
 style="text-align: right; width: 30px; vertical-align: middle;"><small><img
 alt="how to install free file archiver for linux and windows"
 title="Search in PeaZip project domain"
 src="extract-rar/rar-opener.png"
 style="border: 0px solid ; width: 24px; height: 24px;" align="middle"></small></td>
                </tr>
              </tbody>
            </table>
            <br>
            </td>
          </tr>
        </tbody>
      </table>
      </td>
    </tr>
  </tbody>
</table>
</div>
</body>
</html>
